Home / 11,787.10-17,680.65-8,331.10

Finding the Fourth Proportional to 11,787.10, 17,680.65 and 8,331.10

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Solution

The fourth proportional to 11,787.10, 17,680.65 and 8,331.10 is: 12,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.10 : 17,680.65 = 8,331.10 : x
  2. Step 2: Convert to fraction form
    11,787.10/17,680.65 = 8,331.10/x
  3. Step 3: Cross multiply
    11,787.10x = 17,680.65 × 8,331.10
  4. Step 4: Simplify right side
    11,787.10x = 147,299,263.22
  5. Step 5: Solve for x
    x = 147,299,263.22/11,787.10
  6. Step 6: Final answer
    x = 12,496.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.